\(A=\{1,2,3,4\}\), \(B=\{a,b\}\) और (f(1)=a), (f(2)=a), (f(3)=b), (f(4)=b) हो, तो कौन सा कथन सही है?
Let \(A=\{1,2,3,4\}\), \(B=\{a,b\}\), and (f(1)=a), (f(2)=a), (f(3)=b), (f(4)=b). Which statement is correct?
Explanation opens after your attempt
B. यह फलन है और इसका परिसर (B) हैIt is a function and its range is (B)
Concept
Every domain element has one image and both (a,b) occur. Hence it is a function and its range is (B).
Why this answer is correct
The correct answer is B. यह फलन है और इसका परिसर (B) है / It is a function and its range is (B). Every domain element has one image and both (a,b) occur. Hence it is a function and its range is (B).
Exam Tip
हर प्रांत अवयव की एक छवि है और दोनों (a,b) प्राप्त होते हैं। अतः यह फलन है और परिसर (B) है।
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